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Press release content from NewMediaWire. The AP news staff was not involved in its creation.

New model may help predict stroke risk in adults with migraine and aura

February 12, 2020 GMT
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Brain illustration
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Brain illustration

Research Highlights:

Simple risk score prediction model may help determine stroke risk in adults who have migraine with aura.

Migraine with aura increases the risk of ischemic stroke in a younger population otherwise considered to be at a lower stroke risk.

According to the researchers, the new risk score prediction tool may be ready for clinical use once validated in a larger population.

Embargoed until 4 a.m. CT/5 a.m. ET Wednesday, Feb. 12, 2020

( NewMediaWire ) - February 12, 2020 - DALLAS - Researchers have developed a simple risk score prediction model to help determine stroke risk in adults who experience migraine accompanied by aura, according to preliminary research to be presented at the American Stroke Association’s International Stroke Conference 2020 – Feb. 19-21 in Los Angeles, a world premier meeting for researchers and clinicians dedicated to the science of stroke and brain health.

Some people with migraines experience neurological symptoms affecting vision (visual aura) such as flashes of light and blind spots or tingling in the hands or face. In adults, symptoms usually happen before the headache itself, and younger women are at higher risk for migraine with aura.

“People who have migraine with aura are at increased risk for an ischemic stroke,” said Souvik Sen, M.D., M.P.H., study co-author, and professor and chair of the neurology department at the University of South Carolina School of Medicine in Columbia, South Carolina. “With our new risk-prediction tool, we could start identifying those at higher risk, treat their risk factors and lower their risk of stroke.”

Researchers reviewed data from the Atherosclerosis Risk in Communities Cohort (ARIC), a community-based group of people from four U.S. localities (Forsyth County, North Carolina; Jackson, Mississippi; Washington County, Maryland; and suburbs of Minneapolis, Minnesota) who have been followed since 1987. They evaluated the data of 429 adults (mostly women) with a history of migraine with aura who were in their 50s at the first visit. By the end of the study, participants were in their 70s.

They identified five risk factors for stroke and created a prediction model with each factor  assigned a number of points proportional to its influence: diabetes (7 points), age greater than 65 years (5 points), heart rate variability (3 points), high blood pressure (3 points) and gender (1 point). Because the study group contained few men and migraines primarily affect women, fewer points were added for females. After calculating scores for each person, researchers classified participants into one of three groups: low-risk (0 to 4 points), intermediate-risk (5 to 10 points) and high-risk (11 to 21 points).

Researchers found:

Over an average of 18 years of follow-up, 32 people experienced a stroke.

At the end of 18 years, 3% in the low-risk group had a stroke, 8% in the intermediate-risk group had a stroke, and 34% in the high-risk group had a stroke.

Compared to the low-risk group, migraine with aura sufferers in the high-risk group were about 7 times more likely to have a stroke.

According to the researchers, the new risk-prediction tool needs to be validated in a larger population prior to being used in a clinical setting.

Co-authors are: Tushar Trivedi, M.D.; Alexandra Vezzetti, M.S.P.A.S., P.A.-C.; Petr Melikov, M.D., Ph.D.; Alvaro Alonso, M.D., Ph.D.; Lin Yee Chen, M.D.; Elsayed Z. Soliman, M.D.; Jared W. Magnani, M.D., M.Sc.; Rebecca F. Gottesman, M.D., Ph.D.; and Wayne D. Rosamond, Ph.D. Author disclosures are in the abstract.

The National Institute on Minority Health and Health Disparities of the National Institutes of Health funded the study.

Additional Resources:

Video interview: AHA/ASA member of the Stroke Council research committee and others and a volunteer expert, Karen L. Furie, M.D. M.P.H., offers perspective (via Zoom); ischemic stroke animation, illustrations and images may be downloaded from the right column of the release link (click through thumbnails to select). https://newsroom.heart.org/news/new-model-may-help-predict-stroke-risk-in-adults-with-migraine-and-aura?preview=5ed1faf71aa7ba727a0ddd27b844b9fe

ISC 2016 Mtg Report: Migraine with aura linked to clot-caused strokes

ISC 2016 Mtg Report: Worsening migraines with hormone replacement linked to stroke risk

For more news at ASA International Stroke Conference 2020, follow us on Twitter @HeartNews   #ISC20.

Statements and conclusions of study authors that are presented at American Stroke Association scientific meetings are solely those of the study authors and do not necessarily reflect Association policy or position. The Association makes no representation or warranty as to their accuracy or reliability. The Association receives funding primarily from individuals; foundations and corporations (including pharmaceutical, device manufacturers and other companies) also make donations and fund specific Association programs and events. The Association has strict policies to prevent these relationships from influencing the science content. Revenues from pharmaceutical and device corporations are available at https://www.heart.org/en/about-us/aha-financial-information.

The American Stroke Association’s International Stroke Conference (ISC) is the world’s premier meeting dedicated to the science of stroke and brain health. ISC 2020 will be held February 19-21 at the Los Angeles Convention Center in California. The 2 ½-day conference features more than 1,600 compelling scientific presentations in 21 categories that emphasize basic, clinical and translational science for health care professionals and researchers. These science and other clinical presentations will provide attendees with a better understanding of stroke and brain health to help improve prevention, treatment and outcomes for the more than 800,000 Americans who have a stroke each year. Stroke is the fifth leading cause of death and a leading cause of serious, long-term disability in the U.S. Worldwide, cerebrovascular accidents (stroke) are the second leading cause of death and the third leading cause of disability, according to the World Health Organization. Engage in the International Stroke Conference on social media via #ISC20.

About the American Stroke Association

The American Stroke Association is a relentless force for a world with fewer strokes and longer, healthier lives. We team with millions of volunteers and donors to ensure equitable health and stroke care in all communities. We work to prevent, treat and beat stroke by funding innovative research, fighting for the public’s health, and providing lifesaving resources. The Dallas-based association was created in 1998 as a division of the American Heart Association. To learn more or to get involved, call 1-888-4STROKE or visit  strokeassociation.org. Follow us on  Facebook  and  Twitter.

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